The ornamental design for a clotheshanger, as shown and described.
1. Clothes hanger
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Left
1.5 : Right
1.6 : Top
1.7 : Bottom
In the drawings, the evenly dashed broken lines show portions of the clothes hanger that form no part of the claimed design. The dot-dash broken lines show the boundaries of the claim and form no part thereof.